The NCP1402SN50T1G is a monolithic micropower step-up DC-to-DC Converter, specially designed for powering portable equipment from one or two cell battery packs. This device is designed to start-up with a cell voltage of 0.8V and operate down to less than 0.3V. With only three external components, this series allow a simple means to implement highly efficient converters that are capable of up to 200mA of output current at Vin = 2.0V, VOUT = 3.0V. Each device consists of an on-chip PFM (pulse frequency modulation) oscillator, PFM controller, PFM comparator, soft-start, voltage reference, feedback resistors, driver and power MOSFET switch with current limit protection. Additionally, a chip enable feature is provided to power down the converter for extended battery life.
● Extremely Low Start-up Voltage of 0.8V
● Operation Down to Less than 0.3V
● High Efficiency 85% (Vin = 2.0V, VOUT = 3.0V, 70mA)
● Low Operating Current of 30µA (VOUT = 1.9V)
● ±2.5% Output Voltage Accuracy
● Low Converter Ripple with Typical 30mV
● Only Three External Components are Required
● Chip Enable Power Down Capability for Extended Battery Life
●Stresses exceeding those listed in the Maximum Ratings table may damage the device, if any of these limits are exceeded.
